The Development and Application of the Hot-Rolled Plate Ultra-Fast Cooling Equipment

2010 ◽  
Vol 145 ◽  
pp. 260-267
Author(s):  
Guo Yuan ◽  
Guo Dong Wang
Keyword(s):  
Steel Plate ◽  
Rolled Plate ◽  
Rolled Steel ◽  
Cooling Process ◽  
Ultra Fast Cooling ◽  
Impingement Heat Transfer ◽  
Flow Field Characteristics ◽  
Fast Cooling ◽  
Hot Rolled ◽  
Hot Rolled Steel

The ultra-fast cooling technical is a newly developed thermal technical in recent years for the hot-rolled steel plate. The key to develop the ultra-fast cooling equipment are the design of the nozzle structure and the cooling process. The heat exchange mechanism of the jetting impingement heat transfer mode was illustrated during ultra-fast cooling process for the hot-rolled steel plate in this paper. The flow field characteristics and the cooling technological process during the plate ultra-fast cooling process were simulated. And the newly-developed ultra-fast cooling equipment for the hot-rolled plate and its application were also introduced in this paper.

Detecting Flaws Analysis of Q345qD Hot Rolled Steel Plate

2012 ◽  
Vol 630 ◽  
pp. 14-17
Author(s):  
Hai He Luo ◽  
Zhong Bo Dong ◽  
Rong Dong Han
Keyword(s):  
Electron Probe ◽  
Steel Plate ◽  
Ultrasonic Test ◽  
Chemical Compositions ◽  
Rolled Steel ◽  
Metallographic Examination ◽  
X Ray ◽  
Eds Analysis ◽  
Hot Rolled ◽  
Hot Rolled Steel

Three different flaws were detected in a Q345qD hot rolled steel plate by ultrasonic test. The morphologies, chemical compositions and formation causes of these flaws were studied by using metallographic examination, Electron Probe Micros-analyzer (EPMA) and Energy Dispersive X-ray Spectrometer (EDS) analysis. Besides, some corrective measures were proposed to reduce the incidence rate of these detecting flaws.

scholarly journals Performance Evaluation of Solar Collector Having Broken Arc Ribs Of Symmetrical Gap with Staggered Elements

2019 ◽  
Vol 9 (1) ◽  
pp. 7611-7615
Keyword(s):  
Solar Collector ◽  
Steel Plate ◽  
Rolled Steel ◽  
Artificial Roughness ◽  
Relative Roughness ◽  
Test Parameters ◽  
Hot Rolled ◽  
Hot Rolled Steel ◽  
Gap Width ◽  
Absorber Surface

To experimentally investigate the thermal behaviour of solar collector with broken arc artificial roughness of symmetrical gap and staggered element, a study is conducted with four number of absorber surface of hot rolled steel plate of dimensions 1500 mm x210 mm x1.2 mm (length x width x thickness). The test dimension of plate was 1500 mm x 200 mm (LxW). The test parameters were relative roughness pitch P/e as 8-14, relative roughness height e/Dh as 0.04545, number of gaps Ng as 2, relative gap width g/e as 1, relative staggered length r/e as 4.5, relative staggered pitch p’/p as 0.4 and Reynolds number 3000-15000. The highest Nusselt number recorded at staggered length 3.5 was 5 times smooth plate. The highest thermohydraulic performance was recorded 1.85 for the same value of relative staggered length.

Study on Microstructure and Mechanical Properties of Hot Rolled Steel Plate Strengthened Complexly by Titanium and Molybdenum

2011 ◽  
Vol 299-300 ◽  
pp. 197-201
Author(s):  
Hong Bin Wang ◽  
Sheng Li Li ◽  
Chun Tang Niu
Keyword(s):  
Mechanical Properties ◽  
Acicular Ferrite ◽  
Steel Plate ◽  
Polygonal Ferrite ◽  
Rolled Steel ◽  
Coiling Temperature ◽  
Final Rolling Temperature ◽  
Final Rolling ◽  
Hot Rolled ◽  
Hot Rolled Steel

Microstructure and mechanical properties of hot rolled steel plate strengthened complexly by titanium and molybdenum at different final rolling temperature and coiling temperature were studied by optical microscope (OM) and material testing machine. The precipitation behaviors of precipitates phase were obtained using transmission electron microscope (TEM) with EDS analysis. The results showed that at final temperature 850°C, microstructure of experimental steel were fine, uniform polygonal ferrite and acicular ferrite. With the coiling temperature decreasing from 620°C to 580 °C, the grain of polygonal ferrite became finer, and the amounts of acicular ferrite became more; precipitates phase mainly maintained both coarse TiN and small square round sheet (Ti,Mo)C. On the condition of the final rolling temperature (850°C) and coiling temperature (580°C), experimental steel acquired properties as follows: yield strength 608 MPa, tensile strength 720 MPa, elongation 24%. Ti-Mo composite strengthening effect had achieved, and significantly improved the strength of ferrite steel.

Fatigue behavior of hot-rolled steel plate at various stages of fabrication

2008 ◽  
Vol 477 (1-2) ◽  
pp. 386-394 ◽  
Author(s):  
Duangporn Ounpanich ◽  
Yoshiharu Mutoh ◽  
Kenji Yoshii
Keyword(s):  
Steel Plate ◽  
Fatigue Behavior ◽  
Rolled Steel ◽  
Hot Rolled ◽  
Hot Rolled Steel

scholarly journals OPTIMASI PEMILIHAN MATERIAL REAR AXLE HOUSING MODEL T8 JENIS TRUK KAPASITAS 7,5 TON

2018 ◽  
Vol 8 (2) ◽  
pp. 82-87
Author(s):  
Parjiman ◽  
Djoko Karmiadji
Keyword(s):  
Rear Axle ◽  
Steel Plate ◽  
Rolled Steel ◽  
Von Mises ◽  
Hot Rolled ◽  
Hot Rolled Steel

Truk adalah jenis transportasi yang banyak digunakan untuk mengangkut muatan baik hasilpertanian, perkebunan, pertambangan dan lain sebagainya. Ada beberapa varian kapasitas truk yang selamaini dibuat oleh pabrik. Salah satunya truk dengan kapasitas 7,5 ton. Masalah yang timbul adalah trukmengalami patah di bagian rear axlenya. Dengan metode elemen hingga untuk menganalisa desain kekuatanrear axle housing yang menggunakan material Hot Rolled Steel Plate dengan ketebalan 8mm danmenggunakan software pro-engineer didapat tegangan von mises 158,5 Mpa, Displacement 0,307mm danstrain max 0,000835mm dengan angka keamanan sebesar 5,29

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